pydanny/cached-property

Add a way to check if a property has already been cached

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#32 opened on May 13, 2016

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enhancementhelp wanted

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Description

Sometimes it's useful to be able to check if a property has been cached already. Currently I'm using something like:

    @cached_property
    def cachable(self): pass

    def a_function(self):
        if 'cachable' in self.__dict__:
            # Already cached.
        else:
            # Not cached yet.

(Haven't tested this, but I think it'ill work) Can we think of a better API?

Contributor guide

Research direction
Investigate existing patterns for checking cached properties in Python and propose a clean API, possibly adding a method like `is cached()` or a sentinel value. Consider thread safety and compatibility with existing ` dict ` approaches.
Tech stack
python
Domain
backendtooling
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Mostly clear
Prerequisites
Python
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
75